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// Copyright 2016 The Emscripten Authors. All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License. Both these licenses can be
// found in the LICENSE file.
#include <stdio.h>
#include <string.h>
#include <emscripten/em_asm.h>
#include <emscripten/em_macros.h>
EM_JS_DEPS(main, "$stringToUTF8OnStack");
void __attribute__((noinline)) InteropString(char *staticBuffer) {
char *string = (char*)EM_ASM_PTR({
var str = "hello, this is a string! ";
#if ONE_BIG_STRING
// double it until it is bigger than the stack
for (var i = 0; i < 15; ++i) {
str = str + str;
}
stringToUTF8OnStack(str);
#else
// allocate as many times as we need to overflow
for (var i = 0; i < 1024 * 1024; i++) {
stringToUTF8OnStack(str);
}
abort("we should never get here!");
#endif
});
}
int main() {
// Make C side consume a large portion of the stack, before bumping the rest with C++<->JS interop.
char staticBuffer[512288] = {};
InteropString(staticBuffer);
int stringLength = strlen(staticBuffer);
printf("Got string: %s\n", staticBuffer);
printf("Received a string of length %d.\n", stringLength);
return 0;
}
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